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Scientists creating super grass to cut methane emissions from cows

Thu, 13 Oct 2016 14:02:00 EST

Danish scientists are developing a grass that will cut down how often cows burp and pass gas — reducing the amount of methane, a potent greenhouse gas, they release into the atmosphere.(image)



To Help Bees, Skip Herbicides and Pesticides, Keep Lawns Naturally Diverse

Fri, 07 Oct 2016 16:23:00 EST

Declining populations of pollinators is a major concern to ecologists because bees, butterflies and other insects play a critical role in supporting healthy ecosystems. Now a new study from urban ecologists at the University of Massachusetts Amherst suggests that when urban and suburban lawns are left untreated with herbicides, they provide a diversity of “spontaneous” flowers such as dandelions and clover that offer nectar and pollen to bees and other pollinators. (image)



Future increase in plant photosynthesis revealed by seasonal carbon dioxide cycle

Tue, 04 Oct 2016 07:11:00 EST

Doubling of the carbon dioxide concentration will cause global plant photosynthesis to increase by about one third, according to a paper published in the journal NatureThe study has relevance for the health of the biosphere because photosynthesis provides the primary food-source for animal life, but it also has great relevance for future climate change.(image)



Farming with forests

Mon, 03 Oct 2016 14:28:00 EST

Feeding the world’s burgeoning population is a major challenge for agricultural scientists and agribusinesses, who are busy developing higher-yielding crop varieties. Yet University of Illinois researchers stress that we should not overlook sustainability in the frenzy to achieve production goals.More than a third of the global land area is currently in food production. This figure is likely to expand, leading to deforestation, habitat loss, and weakening of essential ecosystem services, according to U of I agroecologist Sarah Taylor Lovell and graduate student Matt Wilson. To address these and other problems, they are promoting an unconventional solution: agroforestry.(image)



Wetlands and agriculture, not fossil fuels could be causing a global rise in methane

Fri, 30 Sep 2016 07:07:00 EST

Research published today in the American Geophysical Union’s journal Global Biogeochemical Cyclesshows that recent rises in levels of methane in our atmosphere is being driven by biological sources, such as swamp gas, cow burps, or rice fields, rather than fossil fuel emissions.(image)



Soil will absorb less atmospheric carbon than expected this century, study finds

Thu, 22 Sep 2016 17:23:00 EST

By adding highly accurate radiocarbon dating of soil to standard Earth system models, environmental scientists from the University of California, Irvine and other institutions have learned a dirty little secret: The ground will absorb far less atmospheric carbon dioxide this century than previously thought.Researchers used carbon-14 data from 157 sample sites around the world to determine that current soil carbon is about 3,100 years old -- rather than the 450 years stipulated by many Earth system models."This work indicates that soils have a weaker capacity to soak up carbon than we have been assuming over the past few decades," said UCI Chancellor's Professor of Earth system science James Randerson, senior author of a new study on the subject to be published in the journal Science. "It means we have to be even more proactive in finding ways to cut emissions of fossil fuels to limit the magnitude and impacts of climate warming."(image)



Soil management may help stabilize maize yield in the face of climate change

Tue, 20 Sep 2016 16:42:00 EST

How will we feed our growing population in the face of an increasingly extreme climate? Many experts suggest the answer lies in breeding novel crop varieties that can withstand the increases in drought, heat, and extreme rainfall events predicted in the not-too-distant future. But breeding is only part of the equation, according to new research from the University of Illinois and several collaborating institutions across the Midwestern U.S."It might not be necessary to put all the stress of climate adaptation and mitigation on new varieties. Instead, if we can manage agroecosystems more appropriately, we can buffer some of the effects of climate instability," says U of I and USDA Agricultural Research Service ecologist Adam Davis.(image)